Pressure-regulator.



w. c. BUCKNAM.

PRESSURE REGULATOR.

APPLICATION FILED 0:50.22. 1911-' v mfimm Patented Apr. 23,1913.

j rrnnr men.

WON-THY C. BUCKNAM, OE JERSEY CITY, NEW JERSEY, ASSIGNOR TO lDAVIS-BO'URNON- WILLIE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

PRESSURE-REGULATOR.

anemone.

Specification of Letters Patent. Patented. Apr. 23, Timid.

Application filed December 22, 1917. Serial No. 208,347.

To all whom it may concern:

following i a specification.

The invention'is' an improvement in pressure regulators or reducing valves. One of the objects is to provide a construction whereby accurate ali'nement of the valve parts, essential to reliableseating, is readily secured. Another object is to embody an eftective and advantageously disposed filter for the incoming gas. Still another object is to guard against dangerous pressure being built up at the low pressure slde through failure of the valve member to seat tightly for any reason. The features of construction and combinations of parts whereby these and other objects and advantages are realized will be particularly pointed out in the claims app'endedto the followingspecification of the preferred form of the organization;

In the accompanying drawing illustrating the invention:

. Figure -1'is an axial section through the cated at 4, this inlet being connected with the chamber by a channel 5, and 6 is an outlet for low pressure gas connected with the 1 chamber 2. The upper wall of the space2 is t0 formed by a diaphragm 7, by which or through which pressure is exerted inwardly of the space 2 in opposition to the pressure existing therein. A screw 8 acting through the top 9 of the regulator upon a diaphragm spring 10 serve to adjust the value of the diaphragm pressure and consequently the amount of fluid pressure in the space 2 and bit the distributing ystem leading therefrom. Gages, not shown, will be connected in practice with the spaces 2 and 3 to indicate the pressure thereln.

The high and low pressure spaces are connected by a narrow passage 11 in a nozzle 12 of hardened metal set into the intermediate, inner wall of the body, the lower end of this nozzle projecting so as to form a raised valve" seat 13. A loose pin 14 in this passage constitutes a thrust connection between the diaphragm and an upwardly acting, springseated, hollow, trunk-form valve member 15,

the head of which has a piece 16 of special seating material let into it and finished flat on top to cocperate with the nozzle.

The onstruction, in so far as it has been described above, is of known character. The novel parts and their relation to the old will now be set forth.

The nozzle 12, with its passage 11 and valveseat13, is mountedina central opening of a plug 17, which is screwed from the low pressure side into a large internally-threaded opening in the inner wall of the regulator body, where it constitutes a removable wall member between the high and low pressure spaces. Formed as a part of this inserted unit, and integral with the plug, is a tubular stem 18, which projects into the high pressure space and serves as a guide chamber for the valve member 15. The said valve member has its side 'relieved at 19, to provide channels for the flow of gas between the valve member and the encircling guide; and in addition ,gas ports 20 may be drilled through the wall of the valve member.

The bottom, or outer side, or the high I pressure chamber 3 is closed by a plug 21,

which is inserted and removedin opposite direction to the inner plu 17. The outer .plug retains and confines t e valve member and'its helical spring 22, which latter isheld in position by aplunger 24, the head of WhlCll bears against the closed end of the hollow interior of the valve member, and the rear or lower end of which is guided in a recess in the plug. 7

In the annular space around the tubular stem 18, and between the lower, inlet part of the same and the hlgh pressure entrance channel 5, a filter is arranged, the same comprising a suitable porous-filling 25, which is interposed between two retainin and gas distributing rings 26, each provi ed with a multiplicity of small perforations 27. These rings and the filling are held between the two plugs 17 and 21.

At the upper 015 outlet end of the passage 11,- the member 17 is formed with an enlarged chamber 28, the upper part of which is counterbored and threaded to receive a screw ring 29 for clamping a compressible washer 30, the'inner edge of which projects facing toward the diaphragm. The relation under all normal operating conditions a free 30 to the lower of this shoulder and the washer is such that gas passage exists around the post and through the washer, but, if the pressure at the low pressure side rises unduly or dangerously, the consequent extent of outward movement of the diaphragm causes the shoulder 32 to press tightly against the valve seat Washer, thus stopping the flow.

The connection between the post 31 and the diaphragm may be secured by providing the post with an enlarged head .33and the diaphragm button 34 with a T-slotted recess 35, open at one side to permit of convenient assembling.

In operation gas at the supply pressure enters through the channel 5, thence through the perforations of the upper ring 26, by

which it is distributed through the filter material 25. After passing through this material it leaves the filter by way of the'openings in the lower ring, then turns and flows upward in the interior of the guide 18, between the same and the valve member 15, and preferably also into the interior of the valve member and out through the lateral openings 20, and thus reaches the valve seat 13 at the entranceto the passage 11. If, as the result of the pressure transmitted by the diaphragm through the pin 14, the valve member be held away from its seat against the action of'its spring, the gas will flow through the said passage, into the chamber 28, around the post 31 and through the washer pressure compartment 2, and thence to the outlet line. When the pressure in the low pressure part of the system reaches the predetermined value, the outward movement of the diaphragm permits the spring 22 to seat the valve. If because of some derangement or the presence of a particle between the valve 15 and its seat, thepressure in the compartment 2 should continue to rise, the valve shoulder 32.would be drawn against the valve seat washer 30, as already described.

In the foregoing specification it will be understood that the terms of orientation,

upper, lower, etc., are used for convenience, and that the regulator may, of course, be placed in any position. It will also be understood that various. changes may be made in respect to form, proportions and details without departing from the substance of the lmprovements as hereinafter po nted out. I

What I claim as new is:

1. A ressure regulator comprising a body containmg high and low pressure spaces connected by a gas passage the entrance of which is commanded by a valve member which is seated toward the low pressure space by a spring and unseated by a diaphragm forming a wall of the low pressure space and acting upon the valve member through a thrust pin in the passage, characterized by an inserted unit containing said passage, which forms an elongated guide for the thrust pin, a valve seat at the entrance to said passage and a guide chamber at the high pressure side wherein said Valve member reciprocates.

2. A pressure regulator comprising a body containing high and low pressure spaces connected by a gas passage the entrance of which is commanded by a springseated valve member controlled by a diaphragm forming a wall of the low pressure space and acting upon the valve thrust pin in the passage, characterized by a plug inserted into the inner Wall of the body from thelowpressure side, said plug containing a nozzle and having a hollow stem extending into the high pressure space and forming a guide wherein the valve member cooperates with the nozzle.

3. A pressure regulator comprising a body containmg high and connected by a gas passage the entrance of which is commanded by a spring-seated valve member controlled by a diaphragm forming a wall of thelow pressure space and acting uponthe Valve member through a thrust pin in the passage, characterized by a plug inserted into the inner wall of the body from the low pressure side, said lug containing the connecting passage and having a' hollow stem extending into the high pressure space and forming a guide wherein the valve member cooperates with the entrance to the passage, and by a filter encircling said stem in the high pressure space.

4. A pressure regulator comprising a body containlng high and low pressure spaces connected by a gas passage the entrance of which is commanded by' a spring-seated valve member controlled by a diaphragm forming a wall of the low pressure space and acting upon the valve member through a thrust pin in the passage, characterized by a plug inserted into the inner wall of the body from the low pressure side, said plug containing the connecting passage and having a hollow stem extending into the high pressure space and forming a guide wherein the valve member cotiperates with the entrance to the passage, and by a filterencircling said stem in the high pressure space, said filter comprising upper and lower perforated rings and an interposed filling. 5. A pressure regulator comprising a body member through a ow pressure spaces racemes Wt containing high and low pressure spaces connected by a gas passage the entrance of which is commanded by a spring-seated valve member controlled by a diaphragm formin a wall of the low pressure space and acting upon the valvemember through a thrust pin in the passage, characterized by the combination of an inner plug inserted from the low pressure side so as to be disposed between the high and low pressure spaces, said plug embodying said passage and a guide for the valve member, and

an outer plug at the high pressure side retaining the valve member and its spring.

6. A pressureregulator comprising a body containing high and low pressure spaces connected by a gas passage the entrance of which is commanded by a spring-seated valve member controlled by a diaphragm forming a wall of the low pressure space and acting upon the valve member through a thrust pin in the passage, characterized by the combination of an inner plug inserted from the low pressure side sov as to be disposed betWeen the high and low pressure spaces, said plug embodying said passage and a guide for the valve member, an outer plug at the high pressure side retaining the valve member and its spring, and a filter encircling the guide and confined between the plugs.

7. A pressure regulator comprising a body containing high and low pressure spaces connected by a gas assage the entrance of which is comman ed by a spring-seated valve member controlled by a diaphragm forming a wall of the low pressure space and acting uponthe valve member through a thrust pin in the passage, characterized by a safety closing valve between the high and low pressure spaces coupled to the diaphragm.

8. A pressure regulator comprising a body containing high and low pressure spaces connected by a gas passage the entrance of which is commanded by a spring-seated acting upon the valve member through a thrust pin in the passage, characterized by the combination of a member containing said passage and an enlarged recess at the outlet end thereof, a projection on the diaphragm entering said recess where it cooperates with the thrust pin, the projection being provided with a safety closing valve element acting toward the diaphragm, and a seat with which said valve element cooperates.

10. A pressure regulator comprising a body containing high and low pressure spaces connected by a gas passage the entrance of which is commanded by a springseated valve member controlled by a diaphragm forming a Wall of the low pressure space and acting upon the valve member through a thrust pin in the assage, characterized by the combination 0 a member containing said passage and an enlarged recess at the outlet end thereof, a post coupled to the diaphragm and entering said recess where it cooperates with the thrust pin, said post being formed with a valve shoulder facing toward the diaphragm, a piece screwed into the recess around the post, and a washer clamped by said piece and constituting a valve seat to cooperate with said shoulder.

WORTHY G. BUGKN. 

